package com.sp.openhis.config.shiro;


import com.alibaba.fastjson.JSON;
import com.sp.openhis.constants.HttpStatus;
import com.sp.openhis.vo.AjaxResult;
import org.apache.shiro.web.filter.authc.FormAuthenticationFilter;


import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;


/**
 * @Author:
 * 判断用户是否进行了登录
 */


public class ShiroLoginFilter extends FormAuthenticationFilter {
  /**
   * 在访问controller前判断是否登录，返回json，不进行重定向。
   * @param request
   * @param response
   * @return true-继续往下执行，false-该filter过滤器已经处理，不继续执行其他过滤器
   * @throws Exception
   */
  @Override
  protected boolean onAccessDenied(ServletRequest request, ServletResponse response) throws Exception {
    HttpServletResponse httpServletResponse = (HttpServletResponse) response;
    httpServletResponse.setCharacterEncoding("UTF-8");
    httpServletResponse.setContentType("application/json");
    AjaxResult ajaxResult=AjaxResult.fail();
    ajaxResult.put("code", HttpStatus.UNAUTHORIZED);
    ajaxResult.put("msg", "登录认证失效，请重新登录!");
    httpServletResponse.getWriter().write(JSON.toJSON(ajaxResult).toString());
    return false;
   }
}
